Purchase advice please.

Firstly gonna start by saying that I do intend to wait for announcements before making any purchase but just wanted to ask a general question.

I am about to buy a macbook pro - mainly because I want a 15inch - thats the only thing putting me off an air

I like the retina screen but don't think it is necessarily "essential" for me but it looks like I can afford it so why not.

I use the laptop for some business related things but do not store lots on it - preferring to store in the cloud, use dropbox, evernote etc. I do not game but do listen to music on it and occasionally view tv programmes/films but watch online rather than download in most cases.

Like most people I like speed.

My question is whether one of the pre-configured models is suitable enough for my needs? Because my daughter is now going to uni I can get university discount so if I am going to add anything to it or change things then I would rather do it now than later to get as much discount as possible.

So - given what is currently available what would you recommend I purchase? And given current thinking on what is likely to be announced next week any other advice - I will of course also wait till the back to school deals are announced

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